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Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Methodology
IBM Security Services continuously monitors billions
of events per year, as reported by more than 8,000
client devices in over 100 countries. This report is
based on data IBM collected between 1 January
2015 and 31 December 2015. The data has been
normalized to account for differences in our clients’
infrastructures across industries and company size.
The annual IBM®
X-Force®
Research Cyber Security
Intelligence Index offers a high-level overview of the
major threats to our clients’ businesses worldwide
over the past year, and is complemented by other
threat intelligence and research publications from IBM
X-Force. Our goal is to help you better understand the
current threat landscape by offering a detailed look
at the volume of attacks, the industries most affected,
the most prevalent types of attacks and attackers, and
the key factors enabling them. We provide insights into
where and how successful attacks can impact today’s
technology-dependent organizations. We also discuss
how the threat landscape is changing from year to
year, as IBM works with companies to help them
better detect and insulate themselves from attacks. By
continuously “tuning” our threat monitoring algorithms
to reflect what we learn in the course of our work,
we’re able to provide our clients with a well-informed
view of the cyber security landscape as it evolves
throughout the year.
2015 in brief
• Your next attacker is likely to be someone you thought you could trust. Insider threats continue to
pose the most significant threat to organizations everywhere.
• IBM found 64 percent more security incidents in 2015 than in 2014. Improvements in detection and
policy refinement made that possible.
• Healthcare became the most frequently attacked industry. A significant increase in attacks rocketed
healthcare straight past financial services and manufacturing.

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Cyber security becomes a
way of life
The year 2015 was filled with serious data
breaches, major attacks and an ever-flowing
stream of new vulnerability reports—across the
entire industry. And while financial gain is still a
powerful motivator for cyber criminals, it’s by
no means the only one. Last year’s attackers
branched out in a big way—inflicting physical
damage, stealing intellectual property and lodging
political protests.
In particular, a previously reported vulnerability
known as Shellshock played a major role in many of
last year’s attacks. A flaw in the Bash shell (widely
used on Linux, Solaris and Mac OS systems),
Shellshock has been around for more than 20
years, but wasn’t disclosed until over a year ago.
Our data for 2015 indicates that Shellshock was
behind last year’s surge in unauthorized access
attacks—defined by our analysts as encompassing
various types of attempts to break into a network,
a server or a database, such as exploiting a
vulnerability to inject command code into software,
exploiting a backdoor, or bombarding a system with
random passwords in hopes that one will work.
Looking at the big picture, it’s clear that virtually
no industry was immune to the exploits of today’s
attackers. However, some industries were targeted
far more frequently than others. In 2015, the
most targeted industries included healthcare,
manufacturing and government organizations
around the world—all of which found themselves
featured in boldface headlines and scrambling
to respond.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Last year’s attackers branched out in a big way—
inflicting physical damage, stealing intellectual
property and lodging political protests.

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Cyber security by the numbers
In 2015, the average client organization
monitored by IBM Security Services experienced
approximately 53 million security events annually
(see Figure 1). As you can see, that’s roughly 28
million—or 35 percent—fewer events than our
clients experienced in 2014. Before discussing
what this sizable difference means, let’s point
out that these events or “episodes” are detected
by a security device or application on a given
system or network that’s being monitored by
IBM Security Services.
Note that the vast majority of security events can
actually be designated as “noise,” or extremely low
priority traffic. From one year to the next, as the
technology supporting security devices improves
and analysts continue to fine-tune the policies to
which they react, the noise lessens. Additionally,
it sometimes happens—as it did in 2014, with an
onslaught of attacks on Heartbleed and
Shellshock vulnerabilities—that we can attribute
a sizable difference in event traffic to one or two
specific situations.
At the same time, our average client company
experienced 1,157 attacks in 2015, down
significantly from 12,017 the year before. We define
attacks as those security events that have been
identified by correlation and analytics tools as
malicious activity that is attempting to collect,
disrupt, deny, degrade or destroy information
system resources—or the information itself.
Yes, that’s a truly sizable drop. We should point out
that it reflects specific and continually optimized
policy tuning on the part of IBM security analysts,
which allowed for far greater efficiency on all levels,
cancelling out the “noise” created by false-positive
traffic and making it possible for analysts to shift
their attention to those events and attacks meriting
further analysis. In other words, the world’s cyber
criminals did not take a break last year.
More importantly, our average client company was
found to have experienced 178 security incidents
in 2015, up 64 percent from the 109 that were
discovered in 2014. The most serious of the three
classifications we use, a security incident is an
attack or security event that has been reviewed
by IBM security analysts and deemed worthy of
deeper investigation. The IBM X-Force Incident
Response Team notes that of all the security
incidents it works through and analyzes, only
three percent actually reach a level of severity
high enough to consider them “noteworthy”—and
most of those commonly result in data disclosure
or theft. That being said, we have unquestionably
seen a significant rise in cyber crime attempts
among our worldwide client base.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
1 • 2
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary

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Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
1 • 2
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Average annual security events, attacks and incidents
2014
109
Incidents
12,017
Attacks
81,342,747
Events
2015
178
Incidents
1,157
Attacks
52,885,311
Events
Figure 1. Security events among our clients can appear in many guises and, sometimes,
extremely high volume. IBM Managed Security Services highly skilled intelligence and
operations teams work to translate those event and attack counts into actionable data and
keep it from overwhelming our clients, while allowing them to focus their efforts on more
critical issues.
Events, attacks and incidents defined
Security event: An event on a
system or network detected by
a security device or application.
Attack: A security event
that has been identified by
correlation and analytics tools
as malicious activity that is
attempting to collect, disrupt,
deny, degrade or destroy
information system resources
or the information itself.
Security incident: An attack
or security event that has
been reviewed by IBM security
analysts and deemed worthy of
deeper investigation.

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Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
1 • 2 • 3 • 4
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Revisiting the five
most-attacked industries
The industry-focused data for 2015 shows some
interesting differences from what we saw for 2014
(see Figure 2). It also reflects a change in the
methodology we use to determine which industries
were the most frequently targeted. Previously, we
based our determinations solely on the number of
security incidents experienced by each industry.
For 2015, however, we incorporated each industry’s
attack counts as well. As a result, we believe
that we’ve improved the accuracy with which we
can report how frequently each industry is being
targeted. Here are the highlights:
• Healthcare broke back into the top five rankings
for 2015, shooting directly to the top spot. That
comes as little surprise to us, after we coined
2015 “The year of the healthcare breach.”1
The healthcare industry once sat firmly on the
sidelines of the cyber war, watching breaches
and malicious attacks wreak havoc elsewhere.
But that’s no longer the case. Five of the eight
largest healthcare security breaches since the
beginning of 2010—those with more than one
million records reportedly compromised—took
place during the first six months of 2015. In
fact, over 100 million healthcare records were
reportedly compromised in 2015.2
Packed with a wealth of exploitable information,
electronic health records fetch a high price on
the black market. They typically contain credit
card data, email addresses, social security
numbers, employment information and medical
history records—much of which will remain
valid for years, if not decades. Cyber thieves are
using that data to launch spear phishing attacks,
commit fraud and steal medical identities.
Five of the eight largest healthcare security breaches since the
beginning of 2010—those with more than 1 million records reportedly
compromised—took place during the first six months of 2015.

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• Manufacturing, which includes automotive,
electronics, textile and pharmaceutical
companies, moved into second place in 2015,
despite the fact that no particularly large-scale
attacks struck the industry. It is worth noting,
however, that automotive manufacturers were
the top targeted manufacturing sub-industry,
accounting for almost 30 percent of the total
attacks against the manufacturing industry in
2015. There was also a lot of automotive industry
interest generated in early 2015, when security
researchers disclosed that attackers could
remotely hack a “connected” car.3
Chemical manufacturers were the second-most
targeted sub-industry in 2015. Note, however,
that although a cyber attack targeting the safety
of a chemical plant or connected car could be
devastating, many attackers are more financially
motivated and therefore more likely to go after
corporate networks—where they could steal
potentially valuable intellectual property or
sensitive information.4
• Financial services dropped from first place
in 2014 to third place in 2015, due in large part
to a significant increase in attack activity in the
healthcare and manufacturing sectors—and, to
some extent, as a result of our ability to refine
and improve our monitoring and detection
capabilities over time. In addition, the industry
has been making its own strides to bolster cyber
security, in reaction to major breaches over the
past several years.
On the consumer side of the financial services
business, it’s important to recognize that some of
the very conveniences that banks now routinely
offer customers—including automated teller
machines, credit cards and mobile banking
apps—have introduced a level of accessibility
that goes a long way toward making the financial
system highly vulnerable to cyber attacks. At the
same time, many commercial banking clients fell
victim to the Dyre and Dridex Trojans, which were
responsible for a large number of multi-million
dollar heists targeting enterprises last year.
The number of breaches in the financial services
industry that involved extortion tactics or theft of
currency rose considerably—by 80 percent—in
2015. As for technical methods, together the
attacks related to malicious attachments or links
and Shellshock made up nearly 38 percent of
those targeting financial institutions in 2015.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
1 • 2 • 3 • 4
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary

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• Government agencies moved up into fourth
place in 2015, coinciding with news reports of
a number of high-visibility breaches—including
one in the US that exposed millions of employee
records containing non-expiring data such as
social security numbers, place of birth and even
digitized fingerprints.
In early 2015, more than 50 million Turkish
citizens found themselves at risk for identity
theft when their national identity information
was leaked from a government database. And
more than a million Japanese citizens were
exposed when employees at the pension service
were tricked into opening a malicious email
attachment that resulted in a data breach of
sensitive, private information.
• Transportation was the fifth-most attacked
industry in 2015. It includes everything from
airlines, bus, subway and commuter rail lines to
overland freight lines and overseas container
ships that transport goods all around the globe.
In many ways, this industry serves as the
backbone of world trade, since without it, global
economies could easily collapse.
Politically motivated cyber criminals regularly
attempt to bring the transportation industry to its
knees in order to produce mass chaos scenarios.
Meanwhile, others are motivated solely by
financial gain. In 2015, both malicious code and
Shellshock attacks accounted for nearly 36
percent of the total security attacks, followed by
denial of service attacks at 16 percent.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
1 • 2 • 3 • 4
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Politically motivated cyber criminals regularly
attempt to bring the transportation industry to its
knees in order to produce mass chaos scenarios.

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Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
1 • 2 • 3 • 4
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Industries experiencing the highest incident rates
Financial services Healthcare
2014 2015
Information and communication Manufacturing
Retail and wholesale Government
Manufacturing Financial services
Energy and utilities Transportation
1
2
3
4
5
1
2
3
4
5
Figure 2. Healthcare moved into the top spot of the rankings as the most-attacked industry
in 2015, replacing financial services, which dropped to third place. Second place went to the
manufacturing industry, while government and the transportation industry took over fourth
and fifth places, respectively.

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Unauthorized access incidents
become even more dominant
It became clear in 2015 that unauthorized access
has taken hold as the leading cause of incidents
across our clients’ security incident landscape
(see Figure 3). While malicious code and sustained
probes or scans dominated the scene in both 2012
and 2013, unauthorized access incidents rocketed
to the top in 2014, accounting for 37 percent of
the total. That figure rose to 45 percent in 2015—
thanks, in part, to Shellshock-related attacks—far
outpacing malicious code.
At the same time, the incidence of sustained
probes or scans dropped from 20 percent in 2014
to 16 percent in 2015. Scans can make it easy
for target organizations to notice they’re being
attacked—and take action before the attackers
can get what they want. So it’s possible that
attackers have backed off this approach, in favor of
conducting more targeted attacks—by exploiting
vulnerabilities or launching spear phishing
campaigns, for example.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
2014 2015
Sustained
probe/scan
Unauthorized
access
Suspicious
activity
Malicious
code
Access or
credentials
abuse
37%
20%
20%
11%
8%
45%
29%
16%
6%
3%
Most frequently occurring incident categories
Figure 3. In 2015, unauthorized access once again topped the list of incident categories
affecting the top five industries named in this report.

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Sixty percent of all attackers
are “insiders”
We’d all like to think that the people who work
for us—including employees, contractors and
consultants—are “good guys.” And the truth is,
most of them are. But in 2015, 60 percent of all
attacks were carried out by insiders, either ones with
malicious intent or those who served as inadvertent
actors (see Figure 4). In other words, they were
instigated or initiated by people you’d likely trust.
They can pose a significant threat, resulting in
substantial financial and reputational losses.
What’s an insider? An insider, in this case, is anyone
who has physical or remote access to a company’s
assets. Those are tangible items—including
hard copy documents, disks, electronic files and
laptops—as well as non-physical assets, such as
information in transit. Although the insider is often
an employee of the company, he or she could also
be a third party. That includes business partners,
clients or maintenance contractors, for example.
They’re individuals you trust enough to allow them
access to your systems.
It’s difficult to think of your employees as a potential
“threat.” And thankfully, while the great majority of
them pose no threat whatsoever, we know that at
least some of them do. The problem, of course, is
that you don’t know which ones. What’s more, these
insiders typically have insights into your company’s
weaknesses—along with potential access to
“insider-only” data. That can allow them an obvious
opportunity, since it’s unlikely they need to bypass
protection systems to obtain or leak sensitive
information because they already have access.
Interestingly, this year’s data revealed that while
insiders were responsible for 60 percent of all
attacks in 2015, up from 55 percent in 2014, roughly
one-third of those attacks were carried out by
inadvertent actors in 2015, compared with nearly
one-half the previous year. Inadvertent actors
are typically well-meaning employees (or other
insiders) who either mistakenly allow an attacker
access to your data or fail to pay attention to your
company’s cyber security policies. For example,
an inadvertent actor might be someone who is
duped in a phishing scam or lured into opening a
malware-laden email attachment. In other words,
it’s not likely they were acting with criminal intent.
What’s more, a reduction in the number of attacks
attributed to inadvertent actors could mean that
more organizations are implementing security
policies and employee education—and that
they’re doing a better job of communicating what’s
expected and why it’s important.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
1 • 2
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary

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On the other hand, there’s no denying the level
of danger posed by insiders who set out to take
advantage of the organization for which they work.
It’s more difficult to thwart their intentions because
they’re willing to take significant risks to circumvent
access controls and are typically unconcerned with
corporate policies or the potential consequences
of their actions.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
1 • 2
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
Who are the “bad guys”?
2015
Outsiders 4
5%
Insiders55%
2014Inadvert
ent actors
23.
5%
31
.5%
Outsiders 4
0%
Insiders60%
actors
15.5%
I
nadvertent
Malicious insiders
44.
5%
Malicious
insiders
Figure 4. In 2015, outsiders were found to be responsible for 40 percent of the attacks
recorded, while 60 percent of attacks were carried out by those who had insider access to
organizations’ systems.

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One more look at the numbers
Taking one more look at our findings for 2015, we’ve
found that some of the numbers we’ve discussed
bear repeating. Our average client company
experienced 178 security incidents in 2015, up 66
percent from the 109 that took place in 2014. Do
the math and you’ll see that nets out to roughly 3.4
incidents per week, up from 2 per week in 2014.
It’s easy to look at those numbers and convince
yourself that yours isn’t the “average” company.
Your organization is too big, or too small, or too
specialized to be considered average. Besides,
you’ve got some pretty decent safeguards in place.
And the people who work there wouldn’t hurt
a fly—let alone do anything that could lead to a
security breach.
It’s easy to think all those things. It’s more difficult
to face the reality that your organization may
already have been breached, or may even be under
attack at this very moment.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary Our team of highly skilled security professionals is
constantly identifying and analyzing new threats,
often before they are even known by the world at large.

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Outthink threats
Organizations of all sizes are at risk, as are those
in all industries. For better or worse, yours is
no exception.
When it comes to cyber security, every company
needs a strategy. And security leaders are now
realizing that neither “checking the box” to
address compliance requirements, nor conducting
annual penetration testing and incident response
exercises are by themselves are sufficient
approaches. Today’s CISOs and security leaders
are now looking for fundamental ways to influence
and improve both their own programs and
established best practices—because they know
that simply being compliant isn’t acceptable for a
well-governed organization. Here are four key steps
you can take toward developing a strategic cyber
security program:
• Prioritize your business objectives and set
your risk tolerance: Striking a balance between
protecting data assets and enabling productive,
innovative workplaces has challenged security
professionals for decades. The truth is, there’s
no such thing as 100-percent secure. That
means you need to make hard decisions about
the different levels of protection required for
different parts of the business.
• Protect your organization with a proactive
security plan: Awareness is essential to security
planning. Understanding the threat landscape,
and actively working to protect your organization
against those threats, requires both technology
and policy.
• Prepare your response to the inevitable,
a sophisticated attack: With the constant
evolution of advanced persistent threats—and
a growing presence of hackers intent on finding
a vulnerability—it’s fairly certain that your
organization may eventually fall victim to a data
breach. Having a coordinated and tested incident
response plan is critical at a time like this, as is
access to the right resources and skills.
• Promote and support a culture of security
awareness: All it takes is one careless employee
to undo a chief security officer’s master plan.
That’s why every employee must work in
partnership with security professionals to help
ensure that the safety of critical data is built into
the culture of the organization.
Doing so will help you understand and prepare to
deal with the real risks facing your organization.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary

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Why IBM Security?
Traditional security defenses are no match
for today’s unrelenting, well-funded attackers,
while disruptive technologies introduce new
vulnerabilities to exploit. Organizations must
accelerate their ability to limit new risk and
apply intelligence to stop attackers—regardless
of how advanced or persistent they are. New
analytics, innovation, and a systematic approach
to security are necessary. And there are very few
companies able to meet those requirements on
their own. Gartner has named IBM a Leader in the
Magic Quadrant for Managed Security Services
(MSS), Worldwide for its ability to execute and
completeness of vision.5
When you engage with IBM for managed services
and consulting security expertise, you gain access
to a full suite of capabilities that can help you extend
protection from the back office to the front office.
We also help ensure that it’s all integrated and
coordinated end-to-end across your enterprise.
At IBM, our IT security services can cover every
corner of your network, from infrastructure to
applications to devices. We monitor, in near
real time, some of the most complex corporate
networks in the world. We develop some of the most
sophisticated testing tools in the industry, many of
which are used by our competitors. And our team
of highly skilled security professionals is constantly
identifying and analyzing new threats, often before
they are even known by the world at large. In fact,
we maintain one of the largest single databases of
known cyber security threats in the world.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary

16.
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Authors
This report was created by the IBM X-Force
research team. Dedicated to delivering industry-
leading cyber threat intelligence, the group
works diligently to keep IBM clients informed and
prepared for the latest cybersecurity threats.
Nicholas Bradley, Practice Lead, Threat Research
Group, IBM Managed Security Services
Michelle Alvarez, Threat Researcher and Editor,
Threat Research Group, IBM Managed
Security Services
David McMillen, Senior Threat Researcher, IBM
Managed Security Services
Scott Craig, Threat Researcher, IBM Managed
Security Services
For more information
To learn more about how IBM can help you
protect your organization from cyber threats and
strengthen your IT security, contact your IBM
representative or IBM Business Partner, or
visit this website:
ibm.com/security/services
Follow usContents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
1
“Security trends in the healthcare industry,” IBM X-Force Research
Managed Security Services Report, November 2015.
2
http://www-03.ibm.com/security/xforce/xfisi/
3
“Driving security, Cyber assurance for next-generation vehicles,”
IBM Global Business Services, Executive Report, June 2014.
4
“Know Your Enemy: Understanding the Motivation Behind
Cyberattacks,” Lyndon Sutherland, IBM Security Intelligence,
March 31, 2016.
5
Gartner Magic Quadrant for Managed Security Services,
Worldwide, December 2015.
Gartner does not endorse any vendor, product or service depicted
in its research publications, and does not advise technology users
to select only those vendors with the highest ratings or other
designation. Gartner research publications consist of the opinions
of Gartner’s research organization and should not be construed as
statements of fact. Gartner disclaims all warranties, expressed or
implied, with respect to this research, including any warranties of
merchantability or fitness for a particular purpose.

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Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
1 • 2
Glossary
Term Definition
Access or
credentials abuse
Activity detected that violates the known use policy of that network or falls outside of
what is considered typical usage.
Attacks Security events that have been identified by correlation and analytics tools as
malicious activity attempting to collect, disrupt, deny, degrade, or destroy information
system resources or the information itself. Security events such as SQL Injection,
URL tampering, denial of service and spear phishing fall into this category.
Breach or compromise An incident that has successfully defeated security measures and accomplished its
designated task.
Denial of service Attempts to flood a server or network with such a large amount of traffic or malicious
traffic that it renders the device unable to perform its designated functions.
Droppers Malicious software designed to install other malicious software on a target.
Event An event is an observable occurrence in a system or network.
Inadvertent actor Any attack or suspicious activity sourcing from an IP address inside a customer
network that is allegedly being executed without the knowledge of the user.
Incidents Attacks and/or security events that have been reviewed by human security analysts
and have been deemed a security incident worthy of deeper investigation.
Keyloggers Software designed to record the keystrokes typed on a keyboard. This malicious
software is primarily used to steal passwords.
Malicious code A term used to describe software created for malicious use. It is usually designed to
disrupt systems, gain unauthorized access or gather information about the system or
user being attacked. Third-party software, Trojan software, keyloggers and droppers
can fall into this category.

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Term Definition
Outsiders Any attacks that are sourced from an IP address external to a customer’s network.
Phishing A term used to describe when users are tricked into opening an infected email
attachment or browsing to a malicious website disguised as a trusted destination
where they provide information that can be used to access a system or account or
steal their identities.
Security event An event on a system or network detected by a security device or application.
Security device Any device or software designed specifically to detect and/or protect a host or
network from malicious activity. Such network-based devices are often referred
to as intrusion detection and/or prevention systems (IDS, IPS or IDPS), while the
host-based versions are often referred to as host-based intrusion detection and/or
prevention systems (HIDS or HIPS).
Spear phishing Phishing attempts with specific targets. These targets are usually chosen
strategically in order to gain access to very specific devices or victims.
SQL injection An attack that attempts to pass SQL commands through a website in order to elicit a
desired response.
Suspicious activity These are lower priority attacks or suspicious traffic that could not be classified into one
single type of category. These are usually detected over time by analyzing extended
periods of data.
Sustained probe/scan Reconnaissance activity usually designed to gather information about the targeted
systems such as operating systems, open ports, and running services.
Trojan software Malicious software hidden inside another software package that appears safe.
Unauthorized access This usually denotes suspicious activity on a system or failed attempts to access a
system by a user or users who do not have permission.
Zero-Day An unknown vulnerability in an application or a computer operating system.
Contents
2015 in brief
Cyber security becomes
a way of life
Cyber security by
the numbers
Revisiting the five most-
attacked industries
Unauthorized access
incidents become even
more dominant
Sixty percent of all
attackers are “insiders”
One more look at
the numbers
Outthink threats
Why IBM Security?
About the authors
Glossary
1 • 2